Why have atrocities been associated with religion—even having been committed under religious auspices? Four Crusades were fought, for example, by popes whose God is love—whose god-man extolls love of enemies and turning the other cheek rather than hitting back. In the modern era, Christianity has been tame, but terrorist acts have been committed in the name of God by people who presume that they cannot possibly be wrong in their beliefs. If Feuerbach is correct, the underlying problem inheres in the belief in God's very existence—that belief pointing us to a still deeper problem in the very nature of faith itself, to a vulnerability or susceptibility that has been overlooked or conveniently glossed over for as long as religion has existed on the face of the Earth.
The full essay is at "Monotheism and Atrocities."